Scythe



Jan. 12, 1932. M WRATSCHKO 7 1,840,345

SCYTHE Filed Jan. 17, 1929 r I. ll Illll.

* UNITED STATES PATENT OFFICE MAX WRATSCHKO, F GRAZ, AUSTRIA SCYTHE Application filed January 17, 1929, Serial No. 333,117, and in Austria February 17, 1928.

Scythes are known, in which the heel is adjustably or movably'secured to the scythe shaft by means of a bolt passing through a transversal slot of the heel and through said shaft, a boss or such heel engaging al0ng1- tudinal groove of the shaft so as to be capable of being displaced longitudinally.

According to the present invention the head of the bolt being arranged at the side opposite to the heel, bears by means of a spherical plane of its head on a seat of the shaft, said seat being correspondingly spherif cally shaped, and the opening in the shaft through which the bolt passes enlarges toward the heel, whereby the scythe blade may be displaced in all directions.

In the annexed drawings a form of the improved scythe is illustrated by way of example. r

Fig. 1 shows the scythe in front elevation and Fig. 2 in a side elevation partly in section along the line ab in Fig. 1.

The scythe blade 10 is provided with a heel 2 which contacts directly with the scythe 26 shaft 1 and is provided with the usual boss 7. Said shaft has a transverse slot 6 in the heel and also has a longitudinal groove 8 suitably spaced from said slot. Said blade is secured to the shaft 1 by means of a screw bolt 3. passing through a transverse slot 6 of the heel, the head 4 of such bolt hearing by 'means of a spherical plane 4, on a correspondingly shaped spherical seat of the shaft. The opening 5 in the shaft through which the bolt passes is enlarged in the manner of a funnel toward the heel 2.

The spherical seat and the enlarged opening in the shaft enable the adjustment of the heel, i. e. the displacing of the scythe blade in all directions, and such adjustment may be effected in a simple manner.

If the heel is to be tilted so that it will be lifted at one of its longitudinal edge poi tions from the shaft, this may be effected after having loosened the nut 9 of the bolt by introducing some piece (key) of corresponding thickness between the heel and the shaft. After loosening or releasing the nut 9-and lifting the boss 7 so as to be disen- 50 gaged from the longitudinal groove 8 the scythe blade may be entirely turned toward the shaft.

What I claim is:

In a scythe, a shaft having a longitudinal groove in one side, a blade having a heel directly connected to said shaft, said heel being provided with a transverse slot and also with a boss, said boss engaging said longitudinal groove, a bolt passing through said shaft and through said slot of the heel, said bolt having a head provided with a spheri cally shaped back face and said shaft having a correspondingly shaped seat in which said back face of the bolt is fitted, the opening in said shaft through which said bolt passes being enlarged around the bolt toward the heel, and a nut on the bolt coacting therewith to secure the heel of the blade to the shaft.

In witness whereof I affix my signature.

MAX WRATSCHKO. 

